DAG: no visible global function definition for ‘terms’
DG: no visible global function definition for ‘terms’
UG: no visible global function definition for ‘terms’
correlations: no visible global function definition for ‘cor’
drawGraph : plot.dots: no visible global function definition for
  ‘points’
drawGraph : plot.dots: no visible global function definition for ‘text’
drawGraph : double.edges: no visible global function definition for
  ‘lines’
drawGraph : double.edges: no visible global function definition for
  ‘segments’
drawGraph : double.edges: no visible global function definition for
  ‘arrows’
drawGraph : draw.edges: no visible global function definition for
  ‘segments’
drawGraph : draw.edges: no visible global function definition for
  ‘arrows’
drawGraph: no visible global function definition for ‘par’
drawGraph: no visible global function definition for ‘plot’
drawGraph: no visible global function definition for ‘locator’
fitDAG: no visible global function definition for ‘formula’
fitDAG: no visible global function definition for ‘var’
fitDAG: no visible global function definition for ‘lm’
fitmlogit: no visible global function definition for ‘model.frame’
fitmlogit: no visible global function definition for ‘model.response’
fitmlogit: no visible global function definition for ‘model.matrix’
fitmlogit: no visible global function definition for ‘glm’
fitmlogit: no visible binding for global variable ‘binomial’
fitmlogit: no visible global function definition for ‘coef’
pcor.test: no visible global function definition for ‘pt’
plotGraph: no visible global function definition for ‘plot’
rnormDag: no visible global function definition for ‘rnorm’
rsphere: no visible global function definition for ‘rnorm’
shipley.test : pval: no visible global function definition for ‘pt’
shipley.test: no visible global function definition for ‘pchisq’
Undefined global functions or variables:
  arrows binomial coef cor formula glm lines lm locator model.frame
  model.matrix model.response par pchisq plot points pt rnorm segments
  terms text var
Consider adding
  importFrom("graphics", "arrows", "lines", "locator", "par", "plot",
             "points", "segments", "text")
  importFrom("stats", "binomial", "coef", "cor", "formula", "glm", "lm",
             "model.frame", "model.matrix", "model.response", "pchisq",
             "pt", "rnorm", "terms", "var")
to your NAMESPACE file.